* Download and install TortoiseSVN source control software.* Create a new folder. You will need around 2 GB of free space.* Right click the folder and choose "SVN Checkout..." option.* In Checkout window set "URL of repository" to: http://xp-dev.com/svn/fonline_sdk/ and click OK.* Wait for SDK to download (it will take a while).This way you will create a local copy of SDK repository on your computer.You can always update it by right-clicking the repository folder and choosing "SVN Update" option.